Self-aligning stool base



March 8, 1932. PLMADSEN 1,848,183

SELF ALIGNING STOOL BASE Filed June 21, 1929 ATTOBNE y.

Patented Mar. 8

anuntidy' appearance; f It is an object ofiny invention to j p'rovide aswivel stool which is normally maintained facing -a counter so thatqa'row'of such stools 3 we all faced in the same direction to presentPETER mnsnn, on rlos ANGEL-ES, CALIFORNIA if e em m s'rooL BASE 1 I musd filed QT t ne 21, 1929.] Serial No. 372.634.

I My invention re'latesfto furniture, and in particular to astool whichfi'nds specia utili'ty asa lunch-counter stool. Q f"; 1 "In stores,restaurants, and the like, it :is

common to have a counter in front of which are disposed a plurality ofswivel stools 'on i which customers may'sitwhile making pur--"chase.xW1-1e1i the customers leave, it usually happens that the stoolsare leftfturn'ed at ananglefto the counter thereby presenting aneat-appearance; 3

nrurther object of my invention is to provide sewer ofthe"character"mentioned in;

which thepositioning means is'in the form of cam arrangement which-isenclosed thebase of the st'oolfj V r 1 It is another object of myinvention toofpro- Y vide a swivelstool which is strongly con--structed- I secure this .object 'b'y providing a stool in which a postthereof extends' downward into a chamber in a supporting pedestal andisj'ournaled i'n'the'fpedestaliat' its lower end.----

It is also an object of iny invention to provide" a swivel'stoolwhich isprovided with a hanger for hats, caps, orother apparel,

and which cooperates with other parts of the stool in a novel manner.

Further objects of my invention-are found 1 in the particular form ofconstruction used in the preferred form of my device as will appear inthe ensuing description.

In the accompanying drawings, I show a preferred form of my invention.

Fig. l is a side elevation, partly in section, showing a stool of myinvention in the normal position. j

Fig. 2'is a side elevation taken in the- Referring to the drawings, my'invention =eonsist'sof a pedestal 10 havinga base 11 ;ad'apte( l' to besupported on-a floor, and a tcylindrical portion 12 which is supportedin an upright position by the base 11. The cylindrical portion 12provides an interior ,Cliamber 13 whiclrextends downward from the" upper,end thereof. Intermediate be:- tween the base 11 and theupper end ofthe pedestal 10 isan annular ring l l projecting I into the chamber'lwhich is machinedor otherwise formed-to support abearing 15.

The upperend of the cylindrical portion12 isdikeWis'e machined'toprovide an upper bearing surface 17 and an inside bearing sur face18. "Journaled b'y'the bearin'g 'surface 18 and supportedon thebearingsurface 17 is a ,cylmdrical portio'n19 of a seat member 20,the seatmember 20 supporting a conventional horizontal seat" 21 and aconventional upright back 22 secured atthe back ofthe seat 21; Asbestshown in Figscl and 3, the.

seat-' member 20 isretained in the pedestal 10bya ball'24 which is heldin the upward end of the pedestal 10 by a plug 25 and which extends intoan annular groovein the cylin- "drical portion 190i the seat member20.This permitsrotation of the seat member 20 but prevents i verticalmovement thereof. Secured to the seat member 20 and extending downwardtherefrom is a post 27 the lower end of whichis journaled by the bearing15. The'post 27 is received'into a central longi tudinal opening 28 inafollowe'r or cammember 29 so as to permit the follower 29 toslide "onthe post 27. h

The follower 29 is'provided with an upper cam surface 30 which has thesame contour V as aflower camsurface 31 formedon a lower face oftjhecylindrical'portlon 19. One end" "of a spring33engages-the bearing '15and the other end thereof engagesthe follower 29'so I as to normallyurge the cam 30 on the'follow- 'er 29 into contact jwiththe cam 31 onthe seat member 20. As clearly shown in Figs. 1 and 4;, a'hanger 34' issecured'by a screw 35 to the Y pedestallO near the upper end thereof andextends outward therefronr I A pin 36 onthe fha-nger extends throughanopening formed through the wall of the pedestal 10 and extends into :1vertical longitudinal slot 37 formed in the follower so as to preventrotation of the follower 29 but permit vertical n'iovement thereof.

As the seat 21 is rotated to a position as shown in Fig. 2, the camsurfaces 30 and 31 provide sliding contact therebctween and the camfo1loyrer29 moved downward ggainstthe action of the spring This isclearly shown in Fig. 2 in which the cam follower 29 is shown as moveddownward and compressing the spring lVhen the seat is unoccupied, thecams 30 and 31 being normally forced into contact by expqnsion of thespring 33, slide relatively to eachother and rotate the stool to anormed position, as shown 1. l estool is thus returned to a in Fig. Inorma position by the action of the spring 33 c on the cams 30, and 31whenever it is unoc eu edv a a It will he noted that i v stool isconstructed very strongly by provr ing an upper beari 18 and a lowerbearing 15, for the post 27. 'l ii e anticularconstruction used insupportingt eseat member 20 also provides an, eco- 2 wand nom gz lmethod. of constructing the stool as it is only neccss rv to mirchinethe surfaces 17 end 18,:1nd thesu rface. ofthe ring 14. The

construction of ny hanger 35 also performs t f' kls ty o a hange and omea for. preventing rotation of fol-lower 29.

I c im my nven ion n w vel st Ol, wmb ee ie i Q a pedestal haying achanextending downp from its upper end; it sent member nwunted so its torotate on said; pod staland providingan inclinedeam surface on :1 lowverface thereof; a post member to said seat member and extending downwardinto said chamber-,- ir follower: mounted for axial translation on saidpost l providingn slot n an Qe s ms fl e faa P n m sseugnging the wallsof said slot so as to prevent rotation of said follower; and compressionI m n y din y r ngs id, o lo er a s said inclined cam.

2-1- s a s o the c mb i Q a pedestalhav-ing a chamberextending-doivnwardfrom its up )er; end; a seat mounted so asto rotateon said' pedestal andproviding an inclined cam surface on a lower face thereof; a postsecured tqsaidseat member and extending downward into said chamher: afollower mounted for axial translation on said post and providing a slotin an outer; surface thereof; {L hanger. secured to and extending fromsaid pedestal and having a pin engaging the wallsof said slot so as toprevent rotation of said fo uower; and mpre ean y e in y r ng a d.fnllgwer against said inclined cam.

3. In a swivel, stool, the combination of: a pedestal'having aichamberextending downward from its upper end; a seat member mounted so as torotate on said pedestal: and

providing an inclined cam surface on a lower face thereof; a postsecured to said seat member and extending downward into said chamber; afollower mounted for axial translation on said post and providing avertical slot in an outer surface thereof; pin means engaging the wallsof said slot so as to preven qmt e said follo e and cQ P sion meansyieldingly urging said follower against said inclined cam.

'4. In a swivel stool, the combination of: a pedestal having a chamberextending downward from its upper end; a seat member mounted so as torotate on said pedestal and providing an inclined cam surface on a loweri. 6 ther o a .se ure sa d s a and. W ins down a d. nto sand am r; afollowermounted for anal transl ti n n pos nrovidi a v rt o 1 an c et wm ha w fi a sewed to and ci t ii i ig f m said pe sta and havinga. P Aeas es the wells o sai lat so as to Pre en not t on qt sai follow- 912;a d: c n e sw mway wisme ad ollo er agains ai unlined em- 5. In a swivelstool combination of: e Re eem! haymsa h Remedies o ar f m. uppe and; tv membe mem o as t seta e on aid means on momma verti a said seat mem r;a post to said seat meshes an xt din downward nt s i smbs i a m b r es aat d ith and poet wirota a le theremt mdmemhe hayin ap nc ined m; beamst ip u alhng the lower end of said post, when; f l ow: for ax a nw atiqnon ai P 8; and, m inta ned, gains new t ws an ome mean ges:- ac

mi e m p and 1 29 41 12 8 3 a moan l we aga nst sa d bmd cm.-

In e t c e Wh nwtl hav here n o se my hand at 0s Angeles, California,this th da-y Qt Jun 29.

P TE MADS N-

